Where: Medina County, Texas (29.0° N, 99.1° W: paleocoordinates 34.5° N, 72.6° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Anacacho Limestone Formation, Early/Lower Campanian to Early/Lower Campanian (83.5 - 70.6 Ma)
• Swezey and Sullivan (2004) correlate the Anacacho LS to the Baculites sp. (weak flank ribs), Baculites sp. (smooth) zone, which is late upper Campanian in Gradstein et al., 2004, through the Baculites maclearni zone., which is middle Campanian in Gradstein et al., 2004.
Environment/lithology: marine; carbonate
Size class: mesofossils
Reposited in the TMM
Primary reference: W. P. Elder. 1996. Bivalves and Gastropods from the Middle Campanian Anacacho Limestone, south central Texas. Journal of Paleontology 70(2):247-271 [M. Patzkowsky/K. Layou/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 3616: authorized by Mark Patzkowsky, entered by Karen Layou on 05.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Inoceramus balticus Bohm 1907 clam |